Teat cup for milking machines



Oct. 28 1924.

W. A. SHIPPERT I TEAT CUP FOR MILKING MACHINES Filed March 26 1921 2 Sheets-Sh!"- 1 Oct. 28 1924.

w. A. SHIPPERT TEAT cui= FOR MILKING uacmrms Filed liar ch 2s 1921 2 Sheets-Shoat 2 v VE/V 7'0 78 a.

WMJHM m ,qTTOE/VEV Patented Get. 2%, i924 v'raunnn a. summer, or onroaeo, ILLINOIS.

TEACH 0 5? FOR MlTLKING MACI-IINES.

Application filed March 36, 1921.' Serial No. {155,898.

To all whom it may concern:

Be it known that I, lVannnN A. SHIPPERQ citizen of the United States, residing at hicago, in the county of Cool: and State of ilinois have invented. certainnew and useiul Improvements in leat (/ups for Milking Machines, of which the following is a speci fication. 7

My invention has reference to teat-cups for milking machines, and relates more specially to that class of such devices the body portion of which is formed of a metal or.

other non-yieldable wall. inese devices are used in clusters in connection with the main part of a milking machine, and are adapted to receive one of the tea-ts of a cow during the milking operation. While firmly grasped by the cup the teat is subjected. to recurrent pulsations similar to those producedby the operation of milking the animal by hand. The pulsations are produced byintermittent vacuum periods formed within the cup followed immedeitely by periods in which the vacuum is released, and atmospheric pres sure substituted therefor. its a result. where the teat of the animal projects directly into the cup it is first subjected to a powerful expansive tendency, sufficient to draw a quantity of mil rom the udder, followed at onceby a strong contractile force. llhese actions cause the blood to flow toward the end of the teat more "rapidly than it can return therefrom, with atendenc-y towards the production of a hard formation at the end of the teat immediately afterthe milking op-- oration is completed. This interferes with the perfect results thereof.

in some cases it has been attempted to overcome this difficulty by using a secondary teat-cup member or inner tube within the outer shell, which inner tube or liner has been independently connected with the air-control devi es. complicated and clumsy arrangement, how- This has called for a' and one which it was ditlicult or im for the-milk downwardly through the teat. The means by which this is produced also assists inreturning the blood upwardly in a regularmanner after the vacuum period has ceased. These and other features and advantages of the invention will be more. fully comprehended from the following specification, reference being hadto the accompanying drawings, in which Fig. 1 shows the invention in longitudinal section.

Fig. 2 is a lower face view of the cap 4, detached.

Fig.- 3 is a tac'hed. 7 V 7 Figs. 4, 5, and 6 illustrate modified forms ofthegdevice in longitudinal section, with a portion of the body part broken'awayw 1 represents the tubular body portion of the device, tapered towards its lower end, so as to receive the end of a piece of tubing, for connection in the usual mannerwith the plan VieW of the bowl 3, de-

milking machine. At its upper end thepart 1 is rolled outwardly, so as to limit the" upward movement of a bowl 3 with which is removably connected a cap 4, by means of ears 5 formed onthe lower edge of the cap, adapted to enter openings 6 infithe upper edge. of the bowl, whereupon the cap is rotated with relation to the bowl, preventing accidental separation of the bowl and irolled edgeQ, forming an air seal at that point. Held securely between the upper end of the shellfand the cap 4: is a flexible d1a ihra 'm'9 ha'vin an openin in the center to" permit the entry of the teat of a cow The cap 4 is projected upwardly into a col- .lar l0, rolled outwardly at its upper edge,

of sufiicient size to admit the teat of a cow,

and adapted to prevent a portion of the cows udder being drawn into the cup by the suction therein. p i

The tube .8 is formed of'soft, pliablerub her, or similar material, and when the device is in use the teat of the animal will project downwardly into the same. When the air in the part i is partially exhausted towards the udder.

body part 20. The lower end oi drawn too great a distance into the cup,

which might occur under an excessive vacuum'suction. Then the cup is under normal atmospheric pressure the tube '8 grasps the teat snugly, with enough pressure to assistin the circulation of the blood back It also acts as a stop, to prevent release a in the body 1 from passing upwardly into the bowl 7.

The diaphragm 9 embraces the teat tightly at a little distance below the: udder,

forming an air-tight seal at that point When there is a vacuum in the part 1, the tendency of the air in the bowl 7 to move downwardly operates to draw the diaphragm inwardly, expanding the same and preventing strangulation or the millr passages at that point. The sloping walls of the bowl 7 render it easy to introduce the teat into the cup or release the same therefrom. I 7

In Fig. 4: of the drawings is shown a slightly different constr ction wherein the 7 upper end of the tube 8 is fastened to a rin 11, held in place between the lower part ot the bowl 'Z and upper end of the body 1.

Fig. illustrates another form of the device, wherein the body 12 and shell 13 are integrally formed, the part 13 being adapted for connection with a cap 14, similarly to the parts 3 and 4 of the device first described herein. This form is also titted with a bowl 15, tube 16 and diaphragm 11?, similar to those above setforth.

Fig. 6 illustrates another mod fication of the invention, wherein the bowl 7 and shell 3 of the original device are combined in the part l8, threaded at its upper end to receive a similarly threaded cap 19, and at its lower en d to connect with the threaded end-ct the the casing 18 has an extension 21, between which and the part 20 is secured, the upper end oi? a *flGXlblG tube 22, similar to the tube 8.

phragm 24 and holding the same tightly proximately one inch.

What Iclann and desire to secure by Letters Patent, 1s:

1. A device of the class described, comprising a rigid tubular body memberga casing of larger diameter than said body member, removably connected therewith; a cap detachably connected with said casing and provided with an outwardly projected collar; a diaphragm within said cap provided with a central opening; a bowl supported within said casing, bearingat itsupper end against said diaphragm, and at its lower end against said body member, and a flexible tube depending from the lower end of said bowl, and open at both of its ends.

2. A device of the class described, comprising a rigid tubular body member; a bowl member removably connected therewith; a cap detachably connected with said bowl member and provided with a. central opening; a flexible annular diaphragm seated in said cap; and a-flexible teat-engaging ber depending from the lower end of said bowl member, the lower part or the wall of said bowl member being inclined inwardly towards said teat-engaging member.

3. In a device of the class described, a rigid tubular body member, adapted for connection with the air exhaust devices of a milking machine; a casing removably connected with said body'meinber; acap detachably connected with said casing, and provided with a central outwardly projected collar; a flexible annular diaphragm located in said cap; a bowl supported. within said casing, having converging walls at its inner end; anda flexible tube secured at its upper end between said bowl and said body member, and open at both ends; said bowl having a bearing at its upper end against said diaphragm, and the connection of said cap and casing operating to hold all 01" said parts united in their proper relations.

In testimony whereof I atlix my signature.

I WARREN A. SHIPPERT. 

